CN113389882A - Gear box flange divides oily structure - Google Patents
Gear box flange divides oily structure Download PDFInfo
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- CN113389882A CN113389882A CN202110628788.0A CN202110628788A CN113389882A CN 113389882 A CN113389882 A CN 113389882A CN 202110628788 A CN202110628788 A CN 202110628788A CN 113389882 A CN113389882 A CN 113389882A
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- oil
- flange
- output shaft
- end cover
- annular
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- 238000007789 sealing Methods 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000005461 lubrication Methods 0.000 abstract description 8
- 230000004323 axial length Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 220
- 239000010687 lubricating oil Substances 0.000 description 15
- 239000000428 dust Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a gear box flange oil distribution structure, which comprises: the bearing end cover is positioned on the outer wall of the flange, and a gap is formed between the bearing end cover and the outer wall of the flange; the output shaft is provided with a central oil passage along the axial direction of the output shaft and a plurality of output shaft oil holes which are arranged in the radial direction and are arranged on the same section; a first annular oil groove is formed in the inner wall of the flange, and a second annular oil groove is formed in the bearing end cover; one end of each output shaft oil hole is communicated with the central oil duct, and the other end of each output shaft oil hole is communicated with the first annular oil groove; the first annular oil groove is communicated with the second annular oil groove through a plurality of radially arranged flange oil holes; and an oil inlet hole is formed in the shell and is communicated with the second annular groove through an end cover oil hole. The pressure lubrication oil distribution device is integrated on the bearing end cover and the flange, so that the number of parts is reduced, and the axial length of the gearbox is shortened.
Description
Technical Field
The invention belongs to the technical field of gearboxes, and particularly relates to a flange oil distribution structure of a gearbox.
Background
China patent 'an NGW type planetary mechanism for gearbox with lubricating oil duct', publication No. CN106989164A, published Japanese 2017.07.28 discloses an NGW type planetary mechanism for gearbox with lubricating oil duct, including two axles, rear bearing cap, oil guide cup, sun gear, planet carrier, roller bearing, planet wheel axle and planet wheel, oil guide cup on be provided with the guide cup oilhole, the planet carrier on be provided with the planet carrier oilhole, the planet wheel axle on be provided with planet wheel axle oilhole, guide cup oilhole and the oil duct of reserving between guide cup and the sun gear be linked together, and guide cup oilhole, planet carrier oilhole and planet wheel axle oilhole are linked together in proper order, planet wheel axle oilhole export be located planet wheel axle surface.
Chinese patent "lubricating apparatus for rotating planet carrier", publication No. CN102840317A, publication No. 2012.12.26, discloses a planetary gear set for improving lubrication of planet gears includes a thrust bearing assembly mounted to the planet carrier that provides a section between the carrier and the hub or fixed transmission element that reduces friction. A lubricant seal disposed radially outward of the thrust bearing assembly collects transmission fluid (oil) provided by the centrally disposed shaft and driven by centrifugal force and flowing past the thrust bearing and into the seal. The fluid collected within the containment and located between the thrust bearing assembly and the planet carrier generates a biasing force that drives the thrust bearing assembly away from the planet carrier, thereby ensuring that the bearing location is determined and that the thrust bearing assembly is positively positioned and that an annular flow path for the fluid is provided to subsequently direct the fluid into a plurality of axial channels within the stub shaft that supports the planet gears. At least one radial passage in each stub shaft provides lubrication of the gearbox fluid to a bearing assembly disposed between the stub shaft and the planet gear.
As shown in fig. 1, the existing transmission pressure lubrication oil distribution structure and the output flange are independently installed.
Pressure lubricating oil in the oil pipe 3 realizes oil inlet and oil distribution through the oil inlet seat 2 and the oil distribution cup 14, the oil inlet seat 2 is connected to the shell 4 through bolts, the oil distribution cup 14 is sleeved on the output shaft 1, relative rotation exists between the oil inlet seat 2 and the oil distribution cup 14, a certain gap is reserved between contact surfaces of the oil inlet seat 2 and the oil distribution cup 14 for avoiding abrasion, and two oil passing snap rings 5 are arranged to realize labyrinth oil sealing. A small part of lubricating oil flows out of the lubricating bearing 6 through the oil snap ring 5, and a large part of lubricating oil enters the central oil passage 1a through the annular oil groove 14a, the oil hole 14b, the annular oil groove 14c, the spline 1c and the oil hole 1b at the bottom of the spline, so that other gears and bearings of the gearbox are lubricated.
The flange 8 is connected with the output shaft 1 through a spline to transmit torque, and is provided with a target wheel 13 of a rotating speed sensor, an oil seal 10, a dust cover 9 and a bearing end cover 7 to realize the functions of rotating speed signal acquisition, oil seal and dust prevention. The flange 8 is axially positioned and fastened by adopting a mode of adding bolts to the flat backing plate 11, and in order to prevent lubricating oil from leaking from a spline gap, two O-shaped rings 12 are arranged between the flat backing plate 11 and the flange 8 and between the flat backing plate and the output shaft 1.
From the analysis, the existing pressure lubrication oil distribution structure and the output flange are independently installed, so that the pressure lubrication oil distribution structure has more parts, complex structure and high cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a flange oil distribution structure of a gearbox, which has the advantages of shortened axial length of the gearbox, clear structure, reliable sealing, low cost and reliable quality.
In order to achieve the above object, the present invention provides a flange oil distribution structure for a transmission, comprising:
the bearing end cover is positioned on the outer wall of the flange, and a gap is formed between the bearing end cover and the outer wall of the flange;
the output shaft is provided with a central oil passage along the axial direction of the output shaft and a plurality of output shaft oil holes which are arranged in the radial direction and are arranged on the same section;
a first annular oil groove is formed in the inner wall of the flange, and a second annular oil groove is formed in the bearing end cover;
one end of each output shaft oil hole is communicated with the central oil duct, and the other end of each output shaft oil hole is communicated with the first annular oil groove;
the first annular oil groove is communicated with the second annular oil groove through a plurality of radially arranged flange oil holes;
and an oil inlet hole is formed in the shell and is communicated with the second annular groove through an end cover oil hole.
Preferably, the outer wall of the flange and positioned at two axial sides of the second annular groove are respectively provided with an oil passing snap ring. So, because there is relative rotation between flange and the bearing end cover, for avoiding wearing and tearing, leave certain clearance between both contact surfaces, two oil snap rings of crossing of installation realize labyrinth oil seal.
Preferably, the outer wall of the flange is provided with a third annular groove, and two ends of the third annular groove are respectively communicated with the flange oil hole and the second annular groove.
Further preferably, the width of the first annular groove is greater than the width of the third annular groove.
Further preferably, the flange is connected with the output shaft through a spline, and the first annular groove is communicated with the spline.
Preferably, the end part of the output shaft is provided with a large nut, and the large nut fixes the flange and enables one end of the flange to abut against the outer wall of the bearing inner ring.
Further preferably, a first sealing ring is arranged between the large nut and the flange.
Further preferably, the large nut is a blind nut.
Preferably, the end cover oil hole comprises a straight hole axially arranged to be communicated with the oil inlet hole and an inclined hole communicating the straight hole with the second annular groove.
Further preferably, a second sealing ring is arranged between the bearing end cover and the shell, and the second sealing ring is located on the periphery of the straight hole. Thus, the lubricating oil can be effectively prevented from leaking from the contact surface between the bearing end cover and the shell.
Preferably, an oil seal and a rotation speed sensor are arranged on the bearing end cover, and the rotation speed sensor is positioned between the oil seal and the second annular groove; therefore, a target wheel of the rotating speed sensor matched with the rotating speed sensor is arranged on the flange.
Preferably, the flange is provided with an L-shaped dust cap covering the bearing end cap.
The invention has the beneficial effects that: the pressure lubrication oil distribution device is integrated on the bearing end cover and the flange, so that the number of parts is reduced, and the axial length of the gearbox is shortened.
The flange axial positioning adopts a mode of blind hole nuts and end face O-shaped rings, and can be fastened and prevent leakage.
The main oil inlet pipe is pressed in the oil inlet hole, and the O-shaped ring is arranged between the oil inlet hole and the straight hole, so that the installation is simple, the sealing is reliable, and the space is saved.
The oil distributing structure of the flange of the gearbox reduces the length and the weight of the gearbox, and has the advantages of less parts, convenience in installation, low cost and reliable quality.
Drawings
FIG. 1 is a prior art arrangement
FIG. 2 is a schematic structural diagram of the present invention
1. An output shaft; 1a, an output shaft oil hole; 1b, a central oil duct; 2. a bearing; 3. a housing; 4. a bearing end cap; 4a, a second annular oil groove; 4b, inclined holes; 4c, straight holes; 5. a rotational speed sensor; 6. oil sealing; 7. a dust cover; 8. a flange; 8a, a target wheel of a rotating speed sensor; 8b, a third annular oil groove; 8d, a flange oil hole; 9. a large nut; 10. a first seal ring; 11. oil passing snap rings; 12. a second seal ring; 13. a main oil inlet pipe.
Detailed Description
The invention will now be described in further detail, including the preferred embodiments, by means of fig. 2 and by way of a list of some alternative embodiments of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example one
As shown in FIG. 2, the invention relates to a flange oil distribution structure of a gearbox, which comprises: the device comprises an output shaft 1 and a shell 3, wherein a bearing 2, a flange 8 connected with the output shaft 1 and a bearing end cover 4 fixedly connected with the shell 3 are arranged between the output shaft 1 and the shell 3, the bearing end cover 4 is positioned on the outer wall of the flange 8, and a gap is formed between the bearing end cover 4 and the outer wall of the flange 8; the output shaft 1 is provided with a central oil passage 1a along the axial direction of the output shaft and a plurality of output shaft oil holes 1b which are arranged in the radial direction and are on the same section; a first annular oil groove 8c is formed in the inner wall of the flange 8, and a second annular oil groove 4a is formed in the bearing end cover 4; one end of each output shaft oil hole 1b is communicated with the central oil duct 1a, and the other end of each output shaft oil hole is communicated with the first annular oil groove 8 c; the first annular oil groove 8c communicates with the second annular oil groove 4a through a plurality of radially disposed flange oil holes 8 d; and an oil inlet hole 3a is formed in the shell 3, and the oil inlet hole 3a is communicated with the second annular groove 4a through an end cover oil hole.
And oil passing snap rings 11 are respectively arranged on the outer wall of the flange 8 and positioned at two axial sides of the second annular groove 4 a. So, because there is relative rotation between flange 8 and bearing end cover 4, for avoiding wearing and tearing, leave certain clearance between both contact surfaces, install two oil snap rings 11 and realize labyrinth oil seal.
And a third annular groove 8b is formed in the outer wall of the flange 8, and two ends of the third annular groove 8b are respectively communicated with the flange oil hole 8d and the second annular groove 4 c. Preferably, the width of the first annular groove 8c is greater than the width of the third annular groove 8 b. Preferably, the flange 8 is connected with the output shaft 1 through splines, and the first annular groove 8c is communicated with the splines.
Example two
As shown in FIG. 2, the invention relates to a flange oil distribution structure of a gearbox, which comprises: the device comprises an output shaft 1 and a shell 3, wherein a bearing 2, a flange 8 connected with the output shaft 1 and a bearing end cover 4 fixedly connected with the shell 3 are arranged between the output shaft 1 and the shell 3, the bearing end cover 4 is positioned on the outer wall of the flange 8, and a gap is formed between the bearing end cover 4 and the outer wall of the flange 8; the output shaft 1 is provided with a central oil passage 1a along the axial direction of the output shaft and a plurality of output shaft oil holes 1b which are arranged in the radial direction and are on the same section; a first annular oil groove 8c is formed in the inner wall of the flange 8, and a second annular oil groove 4a is formed in the bearing end cover 4; one end of each output shaft oil hole 1b is communicated with the central oil duct 1a, and the other end of each output shaft oil hole is communicated with the first annular oil groove 8 c; the first annular oil groove 8c communicates with the second annular oil groove 4a through a plurality of radially disposed flange oil holes 8 d; and an oil inlet hole 3a is formed in the shell 3, and the oil inlet hole 3a is communicated with the second annular groove 4a through an end cover oil hole.
The end part of the output shaft 1 is provided with a large nut 9, and the large nut 9 fixes the flange 8 and enables one end of the flange 8 to abut against the outer wall of the inner ring of the bearing 2. Preferably, a first sealing ring 10 is arranged between the large nut 9 and the flange 8. Preferably, the large nut 9 is a blind nut.
EXAMPLE III
As shown in FIG. 2, the invention relates to a flange oil distribution structure of a gearbox, which comprises: the device comprises an output shaft 1 and a shell 3, wherein a bearing 2, a flange 8 connected with the output shaft 1 and a bearing end cover 4 fixedly connected with the shell 3 are arranged between the output shaft 1 and the shell 3, the bearing end cover 4 is positioned on the outer wall of the flange 8, and a gap is formed between the bearing end cover 4 and the outer wall of the flange 8; the output shaft 1 is provided with a central oil passage 1a along the axial direction of the output shaft and a plurality of output shaft oil holes 1b which are arranged in the radial direction and are on the same section; a first annular oil groove 8c is formed in the inner wall of the flange 8, and a second annular oil groove 4a is formed in the bearing end cover 4; one end of each output shaft oil hole 1b is communicated with the central oil duct 1a, and the other end of each output shaft oil hole is communicated with the first annular oil groove 8 c; the first annular oil groove 8c communicates with the second annular oil groove 4a through a plurality of radially disposed flange oil holes 8 d; and an oil inlet hole 3a is formed in the shell 3, and the oil inlet hole 3a is communicated with the second annular groove 4a through an end cover oil hole.
The end cover oil hole comprises a straight hole 4c axially arranged and communicated with the oil inlet hole and an inclined hole 4b communicated with the straight hole 4c and the second annular groove 4 a. Preferably, a second sealing ring 12 is arranged between the bearing end cover 4 and the housing 3, and the second sealing ring 12 is located on the periphery of the straight hole 4 c. Thus, the leakage of the lubricating oil from the contact surface between the bearing end cover 4 and the housing 3 can be effectively prevented.
Example four
The invention designs a gear box flange oil distribution structure, which comprises: the device comprises an output shaft 1 and a shell 3, wherein a bearing 2, a flange 8 connected with the output shaft 1 and a bearing end cover 4 fixedly connected with the shell 3 are arranged between the output shaft 1 and the shell 3, the bearing end cover 4 is positioned on the outer wall of the flange 8, and a gap is formed between the bearing end cover 4 and the outer wall of the flange 8; the output shaft 1 is provided with a central oil passage 1a along the axial direction of the output shaft and a plurality of output shaft oil holes 1b which are arranged in the radial direction and are on the same section; a first annular oil groove 8c is formed in the inner wall of the flange 8, and a second annular oil groove 4a is formed in the bearing end cover 4; one end of each output shaft oil hole 1b is communicated with the central oil duct 1a, and the other end of each output shaft oil hole is communicated with the first annular oil groove 8 c; the first annular oil groove 8c communicates with the second annular oil groove 4a through a plurality of radially disposed flange oil holes 8 d; and an oil inlet hole 3a is formed in the shell 3, and the oil inlet hole 3a is communicated with the second annular groove 4a through an end cover oil hole.
And a third annular groove 8b is formed in the outer wall of the flange 8, and two ends of the third annular groove 8b are respectively communicated with the flange oil hole 8d and the second annular groove 4 c.
And a third annular groove 8b is formed in the outer wall of the flange 8, and two ends of the third annular groove 8b are respectively communicated with the flange oil hole 8d and the second annular groove 4 c.
The end part of the output shaft 1 is provided with a large nut 9, and the large nut 9 fixes the flange 8 and enables one end of the flange 8 to abut against the outer wall of the inner ring of the bearing 2.
The end cover oil hole comprises a straight hole 4c axially arranged and communicated with the oil inlet hole and an inclined hole 4b communicated with the straight hole 4c and the second annular groove 4 a.
An oil seal 6 and a rotation speed sensor 5 are arranged on the bearing end cover 4, and the rotation speed sensor 5 is positioned between the oil seal 6 and the second annular groove 4 a; therefore, the flange 8 is provided with a target wheel 8a of the rotation speed sensor adapted to the rotation speed sensor 5.
EXAMPLE five
The invention designs a gear box flange oil distribution structure, which comprises: the device comprises an output shaft 1 and a shell 3, wherein a bearing 2, a flange 8 connected with the output shaft 1 and a bearing end cover 4 fixedly connected with the shell 3 are arranged between the output shaft 1 and the shell 3, the bearing end cover 4 is positioned on the outer wall of the flange 8, and a gap is formed between the bearing end cover 4 and the outer wall of the flange 8; the output shaft 1 is provided with a central oil passage 1a along the axial direction of the output shaft and a plurality of output shaft oil holes 1b which are arranged in the radial direction and are on the same section; a first annular oil groove 8c is formed in the inner wall of the flange 8, and a second annular oil groove 4a is formed in the bearing end cover 4; one end of each output shaft oil hole 1b is communicated with the central oil duct 1a, and the other end of each output shaft oil hole is communicated with the first annular oil groove 8 c; the first annular oil groove 8c communicates with the second annular oil groove 4a through a plurality of radially disposed flange oil holes 8 d; and an oil inlet hole 3a is formed in the shell 3, and the oil inlet hole 3a is communicated with the second annular groove 4a through an end cover oil hole.
And oil passing snap rings 11 are respectively arranged on the outer wall of the flange 8 and positioned at two axial sides of the second annular groove 4 a. So, because there is relative rotation between flange 8 and bearing end cover 4, for avoiding wearing and tearing, leave certain clearance between both contact surfaces, install two oil snap rings 11 and realize labyrinth oil seal.
The end part of the output shaft 1 is provided with a large nut 9, and the large nut 9 fixes the flange 8 and enables one end of the flange 8 to abut against the outer wall of the inner ring of the bearing 2. Preferably, a first sealing ring 10 is arranged between the large nut 9 and the flange 8. Preferably, the large nut 9 is a blind nut.
The pressure lubrication oil distribution device is integrated on the bearing end cover 4 and the flange 8, so that the number of parts is reduced, and the length of the gearbox is shortened.
The flange 8 is connected to the output shaft 1 by a spline, and a third annular oil groove 8b, a flange oil hole 8d, and a first annular oil groove 8c are provided thereon. Bearing end cover 4 passes through the bolt-up on casing 3, sets up end cover oilhole and second annular oil groove 4a on it, and the end cover oilhole includes straight hole 4c, inclined hole 4b, because there is relative rotation between flange 8 and bearing end cover 4, for avoiding wearing and tearing, leaves certain clearance between both contact surfaces to two oil snap rings 11 of crossing are installed and are realized labyrinth oil seal.
EXAMPLE six
The invention designs a gear box flange oil distribution structure, which comprises: the device comprises an output shaft 1 and a shell 3, wherein a bearing 2, a flange 8 connected with the output shaft 1 and a bearing end cover 4 fixedly connected with the shell 3 are arranged between the output shaft 1 and the shell 3, the bearing end cover 4 is positioned on the outer wall of the flange 8, and a gap is formed between the bearing end cover 4 and the outer wall of the flange 8; the output shaft 1 is provided with a central oil passage 1a along the axial direction of the output shaft and a plurality of output shaft oil holes 1b which are arranged in the radial direction and are on the same section; a first annular oil groove 8c is formed in the inner wall of the flange 8, and a second annular oil groove 4a is formed in the bearing end cover 4; one end of each output shaft oil hole 1b is communicated with the central oil duct 1a, and the other end of each output shaft oil hole is communicated with the first annular oil groove 8 c; the first annular oil groove 8c communicates with the second annular oil groove 4a through a plurality of radially disposed flange oil holes 8 d; and an oil inlet hole 3a is formed in the shell 3, and the oil inlet hole 3a is communicated with the second annular groove 4a through an end cover oil hole.
The end cover oil hole comprises a straight hole 4c axially arranged and communicated with the oil inlet hole and an inclined hole 4b communicated with the straight hole 4c and the second annular groove 4 a. Preferably, a second sealing ring 12 is arranged between the bearing end cover 4 and the housing 3, and the second sealing ring 12 is located on the periphery of the straight hole 4 c. Thus, the leakage of the lubricating oil from the contact surface between the bearing end cover 4 and the housing 3 can be effectively prevented.
An oil seal 6 and a rotation speed sensor 5 are arranged on the bearing end cover 4, and the rotation speed sensor 5 is positioned between the oil seal 6 and the second annular groove 4 a; therefore, the flange 8 is provided with a target wheel 8a of the rotation speed sensor adapted to the rotation speed sensor 5. Preferably, the flange 8 is provided with an L-shaped dust cap 7 covering the bearing end cover 4.
EXAMPLE seven
The invention designs a gear box flange oil distribution structure, which comprises: the device comprises an output shaft 1 and a shell 3, wherein a bearing 2, a flange 8 connected with the output shaft 1 and a bearing end cover 4 fixedly connected with the shell 3 are arranged between the output shaft 1 and the shell 3, the bearing end cover 4 is positioned on the outer wall of the flange 8, and a gap is formed between the bearing end cover 4 and the outer wall of the flange 8; the output shaft 1 is provided with a central oil passage 1a along the axial direction of the output shaft and a plurality of output shaft oil holes 1b which are arranged in the radial direction and are on the same section; a first annular oil groove 8c is formed in the inner wall of the flange 8, and a second annular oil groove 4a is formed in the bearing end cover 4; one end of each output shaft oil hole 1b is communicated with the central oil duct 1a, and the other end of each output shaft oil hole is communicated with the first annular oil groove 8 c; the first annular oil groove 8c communicates with the second annular oil groove 4a through a plurality of radially disposed flange oil holes 8 d; and an oil inlet hole 3a is formed in the shell 3, and the oil inlet hole 3a is communicated with the second annular groove 4a through an end cover oil hole.
And oil passing snap rings 11 are respectively arranged on the outer wall of the flange 8 and positioned at two axial sides of the second annular groove 4 a. So, because there is relative rotation between flange 8 and bearing end cover 4, for avoiding wearing and tearing, leave certain clearance between both contact surfaces, install two oil snap rings 11 and realize labyrinth oil seal.
And a third annular groove 8b is formed in the outer wall of the flange 8, and two ends of the third annular groove 8b are respectively communicated with the flange oil hole 8d and the second annular groove 4 c.
Preferably, the width of the first annular groove 8c is greater than the width of the third annular groove 8 b. Preferably, the flange 8 is connected with the output shaft 1 through splines, and the first annular groove 8c is communicated with the splines.
The end part of the output shaft 1 is provided with a large nut 9, and the large nut 9 fixes the flange 8 and enables one end of the flange 8 to abut against the outer wall of the inner ring of the bearing 2. Preferably, a first sealing ring 10 is arranged between the large nut 9 and the flange 8. Preferably, the large nut 9 is a blind nut.
The end cover oil hole comprises a straight hole 4c axially arranged and communicated with the oil inlet hole and an inclined hole 4b communicated with the straight hole 4c and the second annular groove 4 a. Preferably, a second sealing ring 12 is arranged between the bearing end cover 4 and the housing 3, and the second sealing ring 12 is located on the periphery of the straight hole 4 c. Thus, the leakage of the lubricating oil from the contact surface between the bearing end cover 4 and the housing 3 can be effectively prevented.
An oil seal 6 and a rotation speed sensor 5 are arranged on the bearing end cover 4, and the rotation speed sensor 5 is positioned between the oil seal 6 and the second annular groove 4 a; therefore, the flange 8 is provided with a target wheel 8a of the rotation speed sensor adapted to the rotation speed sensor 5. Preferably, the flange 8 is provided with an L-shaped dust cap 7 covering the bearing end cover 4.
The main oil inlet pipe 13 is pressed in the oil inlet hole 3a on the shell 3, pressure lubricating oil enters the second annular oil groove 4a through the main oil inlet pipe 13, the oil inlet hole 3a, the straight hole 4c and the inclined hole 4b, a small part of the pressure lubricating oil flows out of the lubricating bearing 2 and the oil seal 6 through the oil snap ring 11, and a large part of the pressure lubricating oil enters the central oil passage 1b through the third annular oil groove 8b, the flange oil hole 8d, the first annular oil groove 8c and the output shaft oil hole 1a on the flange 8 to lubricate other gears and bearings of the gearbox. In order to prevent the leakage of the lubricating oil from the contact surface between the bearing end cover 4 and the housing 3, a second seal ring 12 is installed between the oil inlet hole 3a and the straight hole 4 c.
The flange 8 is also provided with a target wheel 8a of a rotating speed sensor, a welding dustproof cover 7, an oil seal 6 and a rotating speed sensor 5 are arranged on the bearing end cover 4, and the rotating speed sensor and the oil seal realize the functions of rotating speed signal acquisition, oil seal, dust prevention and the like. The flange 8 is axially positioned and fastened by a large nut 9, the large nut 9 adopts blind hole threads for preventing lubricating oil from leaking from a spline gap, and a first sealing ring 10 is arranged on the end face of the nut.
In the description of the present invention, the terms "mounted," "connected," and "connected" are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.
Claims (10)
1. A transmission flange oil distribution structure, comprising:
the bearing end cover is positioned on the outer wall of the flange, and a gap is formed between the bearing end cover and the outer wall of the flange;
the output shaft is provided with a central oil passage along the axial direction of the output shaft and a plurality of output shaft oil holes which are arranged in the radial direction and are arranged on the same section;
a first annular oil groove is formed in the inner wall of the flange, and a second annular oil groove is formed in the bearing end cover;
one end of each output shaft oil hole is communicated with the central oil duct, and the other end of each output shaft oil hole is communicated with the first annular oil groove;
the first annular oil groove is communicated with the second annular oil groove through a plurality of radially arranged flange oil holes;
and an oil inlet hole is formed in the shell and is communicated with the second annular groove through an end cover oil hole.
2. The transmission flange oil distribution structure according to claim 1, characterized in that: and the outer wall of the flange is provided with an oil passing snap ring respectively at two axial sides of the second annular groove.
3. The transmission flange oil distribution structure according to claim 1 or 2, characterized in that: and a third annular groove is formed in the outer wall of the flange, and two ends of the third annular groove are respectively communicated with the flange oil hole and the second annular groove.
4. The transmission flange oil distribution structure according to claim 3, characterized in that: the width of the first annular groove is larger than that of the third annular groove.
5. The transmission flange oil distribution structure according to claim 1, characterized in that: and a large nut is arranged at the end part of the output shaft, and is used for fixing the flange and enabling one end of the flange to abut against the outer wall of the bearing inner ring.
6. The transmission flange oil distribution structure according to claim 5, characterized in that: a first sealing ring is arranged between the large nut and the flange.
7. The transmission flange oil distribution structure according to claim 1, characterized in that: the end cover oil hole comprises a straight hole axially arranged and communicated with the oil inlet hole and an inclined hole communicated with the straight hole and the second annular groove.
8. The transmission flange oil distribution structure according to claim 7, characterized in that: and a second sealing ring is arranged between the bearing end cover and the shell, and the second sealing ring is positioned on the periphery of the straight hole.
9. The transmission flange oil distribution structure according to claim 1, characterized in that: an oil seal and a rotation speed sensor are arranged on the bearing end cover, and the rotation speed sensor is positioned between the oil seal and the second annular groove; therefore, a target wheel of the rotating speed sensor matched with the rotating speed sensor is arranged on the flange.
10. The transmission flange oil distribution structure according to claim 9, characterized in that: and the flange is provided with an L-shaped dustproof cover for covering the bearing end cover.
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| CN202110628788.0A CN113389882B (en) | 2021-05-31 | 2021-05-31 | Gear box flange divides oily structure |
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| CN202110628788.0A CN113389882B (en) | 2021-05-31 | 2021-05-31 | Gear box flange divides oily structure |
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| Publication number | Publication date |
|---|---|
| CN113389882B (en) | 2022-09-27 |
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